Tube, like pipe, is a hollow structure designed to provide an enclosed pathway for fluids to flow. In the case…
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Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors throughout the book, mostly repeated…
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A vertical column of fluid generates a pressure at the bottom of the column owing to the action of gravity on…
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The final step in treating wastewater before releasing it into the natural environment is to kill any harmful…
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The reason why a pneumatic control valve’s stem position corresponds linearly to the amount of air…
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Stoichiometry is the accounting of atoms before and after a chemical reaction. It is an expression of the Law…
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Up until this point, we have explored various types of instrumentation diagram, each one making reference to…
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In reliability engineering, it is important to be able to quantity the reliability (or conversely, the…
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One of the great benefits of digital technology is the ability to communicate vast amounts of information over…
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Self-balancing pneumatic instrument mechanisms are very similar to negative-feedback operational amplifier…
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One of the marks of a successful problem-solver is a habit of applying general principles to every new problem…
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Thermodynamics is the study of heat, temperature, and their related effects in physical systems. As a subject,…
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PID control can be a confusing concept to understand. Here, a brief summary of each term within PID (P. I, and…
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The efficient identification and correction of instrument calibration errors is an important function for…
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A flow switch is one detecting the flow of some fluid through a pipe. Flow switches often use…
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Capacitive level instruments measure electrical capacitance of a conductive rod inserted vertically into a…
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Creative Commons Attribution 4.0 International Public License By exercising the Licensed Rights (defined…
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To show a practical process example, let’s examine three diagrams for a compressor control system,…
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A very simple device used to measure pressure is the manometer: a fluid-filled tube where an applied gas…
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Capacitors store energy in electric fields, proportional to the square of voltage. Inductors store energy in…
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A different strategy for controlling the flow of fluid is to insert a rotary element into the flow path.…
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One of the simplest classes of temperature sensor is one where temperature effects a change in electrical…
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Fieldbus devices require far more attention in their initial setup and commissioning than their analog…
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The electrical conductivity of liquids is an important analytical measurement in many industrial processes.…
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The electrical conductivity of liquids is an important analytical measurement in many industrial processes.…
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Diagnostic ability is arguably the most difficult skill to develop within a student, and also the most…
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A Safety Instrumented Function, or SIF, is one or more components designed to execute a specific…
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Suppose we wished to measure the rate of propane gas flow through a hose to a torch: Flowmeters appropriate…
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An engineer named Bob Metcalfe conceived the idea of Ethernet in 1973, while working for the Xerox research…
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Any power grid large enough to meet the demand of an entire nation must have multiple generators drawing from…
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A 4 to 20 mA current signal represents some signal along a 0 to 100 percent scale. Usually, this scale is…
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A unique form of differential pressure-based flow measurement deserves its own section in this flow…
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Most pneumatic instruments use a simple but highly sensitive mechanism for converting mechanical motion into…
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Learning how to tune PID controllers is a skill born of much practice. Regardless of how thoroughly you may…
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“As to methods there may be a million and then some, but principles are few. The man who grasps…
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While 50 and 51 (instantaneous and time overcurrent) relay functions monitor line current magnitude and guard…
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A number of different sensors used in instrumentation generate DC voltage signals proportional to the process…
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An important performance parameter for transmitter instruments is something often referred to as turndown or…
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Perhaps the most valuable skill an instrument technician can possess is the ability to efficiently diagnose…
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One of the great benefits of digital technology is the ability to communicate vast amounts of information over…
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An electromechanical relay is an electrical switch actuated by an electromagnet coil. As switching devices,…
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In the United States, the ANSI and IEEE organizations have standardized a set of numerical codes referring to…
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In this section I will show screenshots from a process loop simulation program illustrating the effectiveness…
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Learning from reading printed text is a kind of problem-solving activity it is own right. The problem is how…
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